Steps to replicate the issue (include links if applicable):

• Using the quick editing to translate text inside a math formula during the translation of

https://pt.wikipedia.org/wiki/Special:ContentTranslation?from=en&to=pt&page=Low-rank+approximation&targettitle=Aproxima%C3%A7%C3%A3o+de+posto+baixo&revision=1089459597

What happens?:

The browser console shows this error:

Uncaught TypeError: Cannot read properties of null (reading 'getAttribute')

at ve.ui.MWLiveExtensionInspector.updatePreview (<anonymous>:413:582)
at later (load.php?lang=pt&modules=jquery%2Coojs-ui-core%2Coojs-ui-widgets%7Cmw.cx.init%7Coojs-ui.styles.icons-editing-advanced&skin=contenttranslation&version=5xpcf:146:228)

What should have happened instead?:

No error in the console.

Software version (skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.): Version 1.42.97 Chromium: 104.0.5112.102 (Official Build) (64-bit)